Name:   BigFoot - Subject:   Cahaba Brewing Company Cornhole Tournament! Date:   7/30/2017 2:51:54 AM (updated 7/30/2017 2:57:06 AM)

After a little online etymology study, it seems that there are more theories about the game name than kernels on a cob...so I will advance my own theory.  The game was named in the deep South by those same people/descendants who named the other activity of which you speak.